There have been many debates in the IT market in relation to the validity and value of industry certifications, the conclusion is that employers are the value of a certification from a reputable organization as a point reference to the interview process and advancement in the senior level. Of course, the importance of certification is not the piece of paper, name or even the title, the value is in the knowledge that one gains by the preparation and acquisition of certification. Much of what is learned in the search for a Cisco certification is fundamental knowledge in networking that can apply to any network environment, regardless of vendor.
Download the offline version of Cisco Certified Network Associate CCNA Exploration study guide: CCNA Exploration Course Booklet Version 4.0 (by Cisco Networking Academy)
In the search for a Cisco certification, the first marker of mile is on the road is the Cisco Certified Network Associate (CCNA). This certification is designed to validate a knowledge base network, including a basic knowledge of the OSI reference model, network protocols, concepts of Layer 2 switching and protocols, concepts and routing protocols, and wide area networking (WAN) connectivity.
Download the offline version of CCNA Exploration study guide. Simulate the routing and switching process as if you are working with real physical devices.
Download Part-1: CCNA Exploration Offline Installer (1. Network Fundamentals) File size: 45.2 MB
Download Part-2: CCNA Exploration Offline Installer (2. Routing Protocols and Concepts) File size: 29.26 MB
Download Part-3: CCNA Exploration Offline Installer (3. LAN Switching and Wireless) File size: 39.05 MB
Download Part-4: CCNA Exploration Offline Installer (Accessing the WAN) File size: 29.75 MB
The knowledge needed to pass the certification exam CCNA is one of the most valuable skills needed in the networking field. Topics covered in the CCNA certification exam are the building blocks of all network topologies and protocols. Without proper grounding in these skills, professional networking will have difficulty understanding many of the most complex technologies in the field of networking. The most important aspects of certification are the ways in which devices communicate with each other in a network environment using different devices, such as routers and layer 2 switches.
Two things are necessary for a person to pass the CCNA certification exam: a full understanding of networking fundamentals and the ability to configure and troubleshoot Cisco networking devices. These 2 factors are the main reasons for the CCNA certification is so popular among today’s entrepreneurs. Cisco System has the largest network installation base of any supplier in the world and for the IT professional to show fluency with Cisco devices is a bonus, since many networks utilize Cisco products. There is also a common opinion that if someone understands enough networks to pass a certification exam of Cisco, the person only needs to learn another operating system vendor and products to perform the same tasks. These factors make the CCNA certification valuable and credible for many employers in determining candidates considered for hiring or promotion.
The key in preparation for CCNA certification exam is not the memorization of terms, but rather, learning processes involved in passing traffic through Layer 2 switches and routers and services provided by these devices. Most of the CCNA certification revolves around the basics of switching and routing. The key to this understanding is the ability to “see” the creation of networks from the perspective of each device, to identify an Ethernet Frame or IP packet, and to understand what each device must do to pass the packet to the next device or “hop” in the network path.
The encapsulation methodology and protocols used for communication between different types of media and addressing systems used by different protocols are also key to understanding this transport process. Once a person begins to understand how these processes are being conducted, patterns begin clearer. For example, a device that uses the protocol addresses to identify networks all have some plan identifies a network and a host on the network. In addition, all devices that communicate directly in the media will have a treatment or mapping mechanism to identify other devices on the segment.